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Description:

jtypes.py4j 0.10.8a1

Currently only as placeholder (because a base package jtypes.jvm is still in development)

jtypes.py4j
Enables Python to dynamically access arbitrary Java objects.

Overview

jtypes.py4j enables Python programs to dynamically access arbitrary Java objects via
Java’s Native Invocation Interface (JNI).
PyPI record.

jtypes.py4j is a lightweight Python package, based on the ctypes or cffi library.
It is an almost fully compliant implementation of Barthelemy Dagenais’s Py4J package
by reimplementing its functionality in a clean Python via JNI instead of Python and
Java via custom API service.

About Py4J:
Borrowed from the original website:

Py4J enables Python programs running in a Python interpreter to dynamically
access Java objects in a Java Virtual Machine. Methods are called as if the
Java objects resided in the Python interpreter and Java collections can be
accessed through standard Python collection methods. Py4J also enables Java
programs to call back Python objects.

Here is a brief example of what you can do with Py4J.
The following Python program creates a java.util.Random instance from a JVM
and calls some of its methods.

>>> from py4j.java_gateway import JavaGateway
>>> gateway = JavaGateway() # connect to the JVM
>>> random = gateway.jvm.java.util.Random() # create a java.util.Random instance
>>> number1 = random.nextInt(10) # call the Random.nextInt method
>>> number2 = random.nextInt(10)
>>> print(number1,number2)
(2, 7)

Requirements

Java Runtime (JRE) or Java Development Kit (JDK), and NumPy.

Installation
Prerequisites:

Python 2.7 or higher or 3.4 or higher

http://www.python.org/
2.7 and 3.6 are primary test environments.

pip and setuptools

http://pypi.python.org/pypi/pip
http://pypi.python.org/pypi/setuptools

To install run:
python -m pip install --upgrade jtypes.py4j
To ensure everything is running correctly you can run the tests using:
python -m jt.py4j.tests

Development
Visit development page
Installation from sources:
Clone the sources and run:
python -m pip install ./jtypes.py4j
or on development mode:
python -m pip install --editable ./jtypes.py4j
Prerequisites:

Development is strictly based on tox. To install it run:
python -m pip install tox

License

Copyright (c) 2015-2018, Adam Karpierz

Licensed under the BSD license
http://opensource.org/licenses/BSD-3-Clause
Please refer to the accompanying LICENSE file.

Authors

Adam Karpierz <adam@karpierz.net>

Changelog

0.10.8a1 (2018-11-08)

Synchro with Py4J master branch (v.0.10.8).
Update of the required setuptools version.
Minor setup and tests improvements.

0.10.7a2 (2018-09-14)

Synchro with Py4J master branch (v.0.10.7).

0.10.7a1 (2018-06-15)

Synchro with Py4J master branch (v.0.10.7).

0.10.6a4 (2018-05-22)

Update of the required setuptools version.

0.10.6a3 (2018-02-26)

Improvement and simplification of setup and packaging.

0.10.6a2 (2018-01-29)

Development moved to github.
Version numbering in sync. with the original Py4J.

0.0.1a1 (2017-01-10)

First alpha release.

0.0.1a0 (2015-08-05)

Initial version.